Material handling device



Nov. 18, 1941. R. w. KALTENBACH 5 MATERIAL HANDLING DEVICE OriginalFiled May 13, 1938 2 Sheets-Sheet 1 IN V ENTOR. Faazer 1 A44; TEA/5amNov. 18, 1941-. R w KALTENBAQH 2,262,768

MATERIAL HANDLING DEVICE Original Filed May 13, 1938 2 Sheets-Sheet 2 la l l Fig. 44 H 5 INVENTOR.

q BY Fa s/PT M Km TL'NB/JCH ATTORNEYS Patented Nov. 18, 1941 Robert w.Kaltenbach, Cleveland Heights, Ohio Original application May 13, 1938,Serial No. 207,776. Divided and this application June 22, 1939, SerialNo. 280,457

1 Claim.

This invention relates to material handling devices for transferringmaterial such as coal from railway cars to vessels, and the presentapplication is a division of my copending application Serial No. 207,776filed May 13, 1938, granted as Patent No. 2,216,742. One form of devicethat is suitable for this purpose has included a material receivingmember such as a chute or pan, and an extensible vertical spout which ismounted for universal swinging movement adjacent the outer end of thepan.

Heretofore the connection between the pan and the supporting girderembodied what might be termed a piano hinge, that is, a hinge embodyingregistering straps extending along the top end of the pan through whicha succession of hinge pins extend. This construction, however, isobjectionable because of the forces which tend to buckle or bend thesupporting girder and because of the high erection and maintenancecosts. One of the important maintenance costs has been that ofmaintaining proper alignment of the supporting girder.

An object of my invention, therefore, is to make a trunnion connectionbetween the pan and the supporting girder that will obviate the old typeof construction and which therefore, will reduce the erection andmaintenance costs. Additionally, my invention includes a hingeconstruction that will transmit the load stresses more directly to themain columns of the frame and thereby simplify the construction andlower the maintenance cost.

Referring now to the drawings, Fig. 1 is a side elevation of a cardumper embodying my invention; Fig. 2 is a top plan view partly insection of part of the car dumper showing the pan construction; Fig. 3is a section taken on the line 33 in Fig. 2 but on a somewhat largerscale; and Fig. 4 is a section taken on the line 44 in Fig. 3.

A material handling device with which 1 have illustrated my inventionembodies a car dumper having a frame I in which a car supporting cradleH is movably mounted; the cradle being shown in full lines in tiltedposition with a car I2 mounted thereon and clamped thereto. The contentof the car is receivable in a pan 13 which may be pivoted to asupporting girder I and which is adapted to be swung about the pivot bymeans of a cable l5. The pan structure includes a framework 16 on whichthe pan is supported, it being understood that the floor of the panrests upon the framework and that the framework is pivoted to the girderat 6. The pan is wider at its top than the length of any car that may bereceived by the cradle, but the sides of the pan converge toward theouter end thereof at which point a telescopic spout 20 is arranged toreceive the contents of the pan. The spout illustrated is telescopic andis pivotally mounted on the pan framework at 21 and is provided with twosets of sheaves indicated at 22 and 23 for receiving the outboard andinboard cables 24 and 25 respectively. In practice, the top of the panis enclosed from the bottom nearly to the top, so as to hold asubstantial quantity of material whenever the lower end of the spout isclosed.

The mechanism for operating the inboard cables is illustrated in generalat 30 and 30A as comprising electric motor driven drums which aremounted on the framework beneath the pan while the motors for operatingthe outboard cables are indicated at 3| and 3IA as being mounted on asupport that extends across the upper side of the pan. The inboard andoutboard cable guiding sheaves are indicated at 35 and 36 respectivelyand are preferably journalled in bearings which may be shifted withrespect to the spout pivot. Thus, in the form shown in Fig. 1, thesheaves 36 are supported on an outrigger 38 that is rigidly attached tothe pan framework. The outrigger supports the control house 40 in whichsuitable controls are provided for operating the telescopic spoutactuating motors. While I have illustrated electric motors for actuatingthe drums, I may, if desired, use steam engines or other motive power.

To support the pan for a hinging movement upon the frame and at the sametime eliminate the piano hinge type of construction heretofore employed,I use two hinge pins 6 that are positioned at opposite ends of the panadjacent the inlet end thereof and each of which is journalled in abearing 92 which is carried in a bracket 94 on the girder l and adjacentthe column 96. The girder is movable with reference to the column bymeans of a screw shaft 5 which is adapted to be rotated by any suitablemechanism. In this way, the load stresses are transmitted more directlyto the main columns of the frame and hence, the girder is relieved ofpractically all of the horizontal force tending to bend it.Additionally, by utilizing the trunnion mounting, I have greatly reducedthe cost of erection and the cost of maintenance.

From the foregoing description, it will be apparent that I have provideda simple and effective mechanism for lessening the bending stresses,

' tively short hinge pin.

I claim:

In a car dumper, the combination of a frame, I

a girder supported thereby, a material receiving pan mounted forswinging movement upon the girder, the connection between the pan andgirder comprising two spaced trunnions, each of which has a two-pointsupport on the pan and a one point support on the girder, and the panbeing free of any connection with the girder between the hinge pins.

ROBERT W. KALTENBACH.

